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AGE of WATER HEATERS
APPLIANCE DIAGNOSIS & REPAIR
AQUASTAT CONTROL Functions
BACKFLOW PREVENTER, HEATER WATER FEEDER
DRAIN a WATER HEATER TANK
ELECTRIC WATER HEATERS
FLOODED WATER HEATER REPAIR
GAS FIRED WATER HEATERS
HOT WATER EXPANSION TANKS
HOT WATER SUPPLY
HOT WATER IMPROVEMENTS
HOT WATER DELIVERY SPEED UP
INDIRECT FIRED WATER HEATERS
MANUALS & PARTS GUIDES - HVAC
MIXING / ANTI-SCALD VALVES
NO HEAT - NO HOT WATER: HEATER DIAGNOSIS
NOISE, WATER HEATER
RELIEF VALVE, WATER HEATER
SOLAR HOT WATER HEATERS
TANKLESS WATER HEATERS
THERMOSTATS, WATER HEATER
TIMERS for ELECTRIC WATER HEATERS
WATER HEATER ALTERNATIVES
WATER HEATER ANODES, DIP TUBES
WATER HEATER AIR INLET
WATER HEATER DEBRIS FLUSH
WATER HEATER DRAIN PROCEDURE
WATER HEATER EFFICIENCY
WATER HEATER FLUSH PROCEDURE
WATER HEATER NOISE DIAGNOSIS, CURE
WATER HEATER PROBLEM DIAGNOSIS
WATER HEATER COMPARISONS, PROPERTIES
WATER HEATER SCALE
WATER HEATER SAFETY
WATER HEATERS for HOME HEATING USE?
WATER ODORS, CAUSE CURE
WATER PIPES, Clogs Leaks Types
WATER PRESSURE TOO HIGH: DANGERS
WATER PRESSURE LOSS DIAGNOSIS & REPAIR
WATER SOFTENERS & CONDITIONERS
WINTERIZE A BUILDING
Legionella sp. bacteria hazards in water heaters & hot water plumbing systems: this article explains why there is a risk of harmful or even dangerous Legionella sp. bacteria formation in hot water heating systems and describes the minimum temperature required in these systems to avoid the Legionella hazard.
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Legionella Bacteria & Legionnaires' disease hazards in water heaters, hot water tanks & hot water cylinders or geyers
Watch out: attempts to avoid scalding burn hazards by lowering the maintenance temperature of the water heater itself convey a new hazard: at lower temperatures in water heaters there is a risk of formation of Legionella sp. bacteria. Regarding prevention of Legionella, cf Veterans Administration source in citations at the end of this article. Quoting:
The requirement to keep water quite hot in the water heater or piping systems of buildings in turn leads to the need for ANTI SCALD VALVES / MIXING VALVES to provide scald protection for building occupants.
Reference Citations for Anti-Scald Temperature Limits, information & regulations
Legionella Contamination in Drinking Water Research
Continue reading at LEGIONNAIRES' DISEASE INFO from CDC or select a topic from the More Reading links shown below.
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